Option One: The most basic one was to sacrifice eight techniques to nurture a principle one, achieving a Magic Door and forming the most common lower three-grade Dao Foundation.
In other words, when the Nine Techniques merged, one would serve as the main body, with the remaining eight as auxiliary, only retaining the effect of one technique and enhancing it to achieve a Magic Door ultimately.
Most people choosing this path would pick one direction for their Nine Techniques.
For example, during their child phase, one would learn nine speed techniques, like Godspeed, Featherfall, Gale, etc. Upon advancing to the melting phase, one would use eight speed techniques as the foundation and one as the core, gathering the power of the eight techniques to nourish one, ultimately achieving a lower grade Technique in the speed direction.
